Nitrile Gasket
Product Overview
Our NBR gaskets are compression-molded seals designed for oil resistance and reliable sealing under sustained clamping loads. With in-house compounding, we customize gasket profiles and material properties for specific operating conditions.
Typical applications include fuel systems, pumps, valves, and industrial machinery, depending on fluid compatibility and service conditions.
Key Performance Advantages
Low Compression Set: ≤25% after 22 hours at 100°C under specified test conditions, supporting long-term sealing performance.
Mechanical Strength: 60–70 Shore A hardness and reported compressive strength above 10 MPa.
Gas Sealing: Low gas permeability and optional controlled pressure testing for selected critical applications.
Custom NBR Formulation: In-house compounding to tailor hardness, density, and fluid compatibility to application requirements.
Material & Compatibility
NBR gaskets resist petroleum-based oils, lubricants, greases, and selected fuels.
Recommended For: Mineral oils, hydraulic oils, lubricating greases, and diesel fuels.
Limited Compatibility: Gasoline, diluted acids and alkalis, and hot water require compound-specific evaluation.
Not Recommended For: Ketones, esters, chlorinated solvents, ozone-rich environments, and prolonged outdoor exposure.
Material Selection: Provide the fluid type, concentration, operating temperature, and pressure for material evaluation.
OEM & Customization Support
Drawing & Sample-Based Development: Custom gasket projects can start with 2D drawings, 3D CAD files, or existing samples.
Pre-Production Approval: Initial samples are available for evaluation before mass production.
Repeat-Order Consistency: Approved drawings, material specifications, and inspection criteria serve as references for repeat orders.
Tooling Management: Mold storage, maintenance, and reuse arrangements are agreed upon before production.
Specification Change Control: Changes to approved drawings or material requirements are reviewed before implementation.
Custom Manufacturing
Custom Shapes & Dimensions:
Flat gaskets, irregular profiles, complex cross-sections, and custom thicknesses.
NBR Compound Selection:
Material formulations tailored to required hardness, density, and oil resistance.
Mold Design & Tooling:
Custom molds manufactured to approved product drawings and dimensions.
Dimensional Tolerances:
Tolerances defined according to approved drawings and specifications.
Quality Control and Testing
Dimensional & Visual Inspection: Inspection of critical dimensions, thickness, flash, cracks, and surface defects.
Physical Property Testing: Hardness (ASTM D2240), compression set (ASTM D395), tensile strength, and elongation (ASTM D412).
Oil & Fluid Resistance Testing: Volume change testing for specified oils and fluids according to ASTM D471, when required.
Production Process Control: Monitoring of molding and curing conditions.
Leak Testing: Pressure or leak testing according to agreed requirements.
Quality Documentation
Material Test Report (MTR): Test methods, measured results, hardness, tensile strength, elongation, and compression set, as applicable.
Dimensional Inspection Report: Measured dimensions and inspection results against approved drawings.
Batch Traceability Records: Material batch numbers, production lot identification, and inspection records.
Regulatory Compliance Documents: Applicable RoHS and REACH declarations, subject to material composition and customer requirements.
FAQ
Q: Are there additional costs for custom gasket tooling?
A: New molds may incur separate tooling charges based on gasket geometry, mold complexity, and production requirements.
Q: What information is needed for an NBR gasket quotation?
A: Provide a 2D drawing or 3D CAD file, required quantity, material specifications, application details, and packaging or delivery requirements.
Q: How are NBR gaskets packaged for export?
A: NBR gaskets are packed in PE bags and export-grade cartons. Palletized packaging and custom labels are available upon request.
Q: How should NBR gaskets be stored before installation?
A: Store gaskets in a cool, dry place away from direct sunlight, ozone sources, heat, and chemicals. Follow the compound supplier's recommended shelf life.
Q: What is the minimum order quantity (MOQ) for NBR gaskets?
A: Our standard MOQ is 100 pieces, subject to gasket specifications and customization requirements.
Q: What is the typical lead time for custom NBR gaskets?
A: Sample lead time is typically 4–6 weeks, including tooling and initial samples. Production lead time is typically 3–5 weeks after sample approval, depending on order quantity.
Hot Tags: nitrile gasket, China nitrile gasket manufacturers, suppliers, factory
You Might Also Like
Send Inquiry